S
M
T
W
T
F
S
30
82°
61°
31
81°
61°
1
80°
60°
2
79°
61°
3
80°
61°
4
81°
60°
5
79°
54°
6
79°
55°
7
84°
57°
8
83°
55°
9
81°
54°
10
80°
58°
11
77°
52°
12
80°
52°
13
83°
58°
14
82°
50°
15
76°
49°
16
74°
50°
17
75°
49°
18
77°
50°
19
81°
50°
20
81°
51°
21
80°
55°
22
81°
55°
23
80°
54°
24
79°
52°
25
79°
51°
26
78°
54°
27
79°
53°
28
75°
53°
29
79°
52°
30
79°
52°
1
78°
51°
2
78°
51°
3
77°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chapel Hill
Chapel Hill's September 2026 forecast shows daily high temperatures ranging from 74° to 84°, with overnight lows between 48° and 61°. The average high for September is 79° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Chapel Hill. See also: October | November | December.
